Why are artists like leonardo da vinci, michelangelo, and raphael considered some of the greatest artist ever?

What does bts stand for? what is the importance of bts? who first started it?

(i think my answer is a, am i correct? ) a pentagonal traffic sign is a sign. a. school crossing b. parking c. wrong way d. yield

Which line from hopkins's "spring and fall: to a young child" includes an allusion to an ancient story? a. "it is margaret you mourn for" b. "it is the blight man was born for" c. "are you grieving / over goldengrove unleaving? " d. "now no matter, child, the name: / sorrow's springs are the same"